• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 396 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

OPA129: OPA129

Hojin Sung
Prodigy 110 points

Part Number: OPA129

Hi,guys!

I have a plan to make Voltage Follower.

Apply Input voltage about 0 ~6 V

I have two questions.

First,  There was no information about Common-Mode Input range condition.

I'd like to know the specific conditions.

Second, I wonder if  is it working and no problem in my circuit??

Please let me know as soon as possible, 

Thanks a lot!

Regards,

  • 0
    TI__Guru* 93105 points

    Hi Hojin,

    You show that you are using a +5 V/-15 V supply. The table conditions are specifically for +/-15 V supplies. Using the Common-mode input range for a +/-15 V supply indicates that the typical VCM is +/-10 V, or 5 V from each supply rail. For your +5 V/-15 V the equivalent VCM of 0 V on the high end and -10 V on the low end. If you apply a positive voltage greater than 0 V the positive VCM input range is exceeded and the OPA129 will not be operating in its linear input voltage range.

    The way to fix the problem is to increase V+ to something on the order of +11 V, or greater.

    Regards, Thomas

    Precision Amplifiers Applications Engineering